Publications by authors named "Yoshihiro Maeyama"

Objective: We here describe treatment outcomes in two adenosine deaminase (ADA)-deficiency patients (pt) who received stem cell gene therapy (SCGT) with no cytoreductive conditioning. As this protocol has features distinct from those of other clinical trials, its results provide insights into SCGT for ADA deficiency.

Patients And Methods: Pt 1 was treated at age 4.

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Background: It has been known that skeletal muscles show atrophic changes after prolonged sedation or general anesthesia. Whether these effects are due to anesthesia itself or disuse during anesthesia has not been fully clarified. Autophagy dysregulation has been implicated in muscle-wasting conditions.

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Background: Microenvironments control cancer growth and progression. We explored the prognostic impact of stromal reaction and cancer stromal cells on relapse risk and survival after curative gastrectomy in gastric cancer patients.

Methods: Tissue samples were obtained from 107 patients with gastric adenocarcinoma who underwent curative (R0) gastrectomy.

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Hematopoietic cell transplantation has proven beneficial for various intractable diseases, but it remains unclear how hematopoietic stem/progenitor cells (HSPCs) home to the bone marrow (BM) microenvironment, initiate hematopoietic reconstitution, and maintain life-long hematopoiesis. The use of newly elucidated molecular determinants for overall HSPC engraftment should benefit patients. Here, we report that modification of C-X-C chemokine receptor type 4 (Cxcr4) signaling in murine HSPCs does not significantly affect initial homing/lodging events, but leads to alteration in subsequent BM repopulation kinetics, with observations confirmed by both gain- and loss-of-function approaches.

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Skeletal muscle wasting is an exacerbating factor in the prognosis of critically ill patients. Using a systemic burn injury model in mice, we have established a role of autophagy in the resulting muscle wasting that is distant from the burn trauma. We provide evidence that burn injury increases the autophagy turnover in the distal skeletal muscle by conventional postmortem tissue analyses and by a novel in vivo microscopic method using an autophagy reporter gene (tandem fluorescent LC3).

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Estrogen receptor-binding fragment-associated antigen 9 (EBAG9) is a tumor-promoting factor of largely unknown function. To assess a causative role of EBAG9 in advanced malignancies, we generated the EG7-OVA and MethA murine tumor cell lines that stably express full-length or truncated EBAG9 protein, using retroviral-mediated gene transduction. Upon subcutaneous inoculation into immunocompetent mice, both cell lines showed marked acceleration of in vivo tumor growth when full-length EBAG9 was overexpressed.

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Purpose: Preexisting antiviral antibodies in cancer patients can quickly neutralize oncolytic measles virus (MV) and decrease its antitumor potency. In contrast to "naked" viruses, cell-associated viruses are protected from antibody neutralization. Hence, we hypothesized that measles virotherapy of ovarian cancer in measles-immune mice might be superior if MV-infected mesenchymal stem cell (MSC) carriers are used.

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Purpose: Stomach-preserving distal pancreatectomy with en bloc resection of the celiac, common hepatic, and left gastric arteries is a radical operation performed for locally advanced cancer of the pancreatic body. However, it is not known whether the collateral pathways that develop immediately from the superior mesenteric artery to the gastroduodenal and hepatic arteries provide sufficient blood flow to support the hepatobiliary system and the stomach. This article examines the ischemic gastropathy that can occur after this procedure and identifies the predisposing conditions.

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